<body>
<table>
<tr>
<td>Left side of the main table</td>
<td>
<table>
<b>Nested Table</b>
<tr>
<td>nested table C1</td>
<td>nested table C2</td>
</tr>
<tr>
<td>nested table</td>
<td>nested table</td>
</tr>
</table>
</td>
</tr>
</table>